At some point in 2005, Tony Blair will stand for a third term as Priminister. Despite his deteriorating credibility he is still likely to win because of the weakness of the two rival political parties.

In the U.S. the longest a President can serve is two terms.

Is the American model the way to go, or should we allow our leaders to stay in power until either the processes of democracy or the long knives in their own political parties oust them?